Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 279, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2021.119733
Keywords
Emerging pollutants; Tantalum pentoxide; Mesocrystals; Composite; Visible-light photocatalysis
Categories
Funding
- China Postdoctoral Science Foundation [2019M652526]
- Scientific and Technological Project of Henan province [202102310607, 202102310613]
- Program for Innovation Teams in Science and Technology in Universities of Henan Province [20IRTSTHN004]
- College Students' Innovative Entrepreneurial Training Plan Program of Henan University [2020101510]
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This study fabricated ternary Ag/AgCl/Ta2O5_x mesocrystals for visible-light photodegradation of emerging pollutants by introducing Ag/AgCl nanoparticles into defects engineered Ta2O5_x mesocrystals. The efficient visible-light absorption and photodegradation were mainly attributed to the high-efficient Z-scheme charge-transfer pathways between Ag/AgCl and Ta2O5_x mesocrystals, showing promising application for dealing with emerging contaminants.
Fabricating rapid and high-efficient charge-transfer pathways is contributing to improving charge separation and receiving extensive concerns in preparation of semiconductors composites photocatalysts. In this work, ternary Ag/AgCl/Ta2O5_x mesocrystals were fabricated for visible-light photodegradation of emerging pollutants by introducing Ag/AgCl nanoparticles into defects engineered Ta2O5_x mesocrystals. The prepared composites showed efficient visible-light absorption and efficient visible-light photodegradation of emerging pollutants, mainly attributed to the fabricating of high-efficient Z-scheme charge-transfer pathways between Ag/AgCl and Ta2O5_x mesocrystals. Note that, the experimental results also demonstrated the significant roles of defects engineered Ta2O5_ x mesocrystals in fabricating high-efficient Z-scheme charge-transfer pathways. Besides, the prepared Ag/AgCl and Ta2O5_ x composites could be employed for efficient visible-light photodegradation of many other organic contaminants. Current work indicates a promising and high-performance visible-light composite photocatalyst for dealing with emerging contaminants.
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